If, when you use Tableau or Alteryx to query a Snowflake Database, you are getting weird $ amounts, not matching what is the database, you are experiencing a known bug in the recent versions of the Snowflake ODBC driver:
This is a big issue affecting floating number columns. Fortunately, it has been addressed with the release of ODBC Driver version 2.16.7 in August:
Make sure you update your ODBC driver as soon as possible!
Here are the instructions: